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Alternator - ACDelco (334-3077)

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Details

  • Brand:

     Parts

  • SKU:

    334-3077

  • GTIN: 00193468774221
  • UPC: 193468774221
  • Positions: Upper
  • Other Names:

    19427535

  • Description: ACDelco Gold (Professional) Remanufactured Alternators are the high quality alternative to Original Equipment (OE) parts. These alternators use high-quality bearings with high-temp lubricant and double-lipped rubber seals. Rotors and stators are electronically tested and then sealed with secondary insulating coating. Remanufacturing alternators is an industry standard practice that involves disassembly of existing units, and replacing components that are most prone to wear with new components. Damaged and obsolete parts are replaced and are end of line tested to ensure they perform to ACDelco specifications. In addition, remanufacturing returns components back into service rather than processing as scrap or simply disposing of them. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional. ⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
  • Condition: New
  • Warranty:

Alternator - ACDelco (334-3077)

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Pricing is valid online only and may vary in your local store

Manufacturer Warranty Minimum of 12 Months
Guaranteed Fitment ALWAYS - When VIN is provided
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In-House Experts We know our products

Vehicle Fitment

Vehicle Fitment

No application/vehicle fitment information available for this product
Vehicle Fitment
Year Make Model Body & Trim Engine & Transmission
( more fitments)
No fitment data available

Interchange

Interchange

Product Reviews

Brand

ACDelco

Shop ACDelco Parts Online – Genuine GM Aftermarket Quality
Explore ACDelco, the official General Motors (GM) original equipment and aftermarket parts brand, now available at AutoNation’s Aftermarket Store. Trusted by professional technicians and vehicle owners worldwide, ACDelco offers high-quality parts engineered for reliability, durability, and OE-level performance.

With a full lineup that includes:

  • Starters & alternators

  • Brake pads & rotors

  • Oil filters & air filters

  • Ignition components

  • Suspension & steering parts

…ACDelco ensures a precise fit for GM vehicles and a wide range of non-GM makes and models.

Backed by a 24-month/unlimited-mile limited warranty, ACDelco parts meet rigorous industry standards for quality and performance. When you choose ACDelco at AutoNation Parts, you get genuine aftermarket value — delivered fast and supported by America’s most admired automotive retailer.

Store

aftermarket

AutoNation Aftermarket Parts FAQ & Buying Guide | AutoNation Parts

What is the AutoNation Aftermarket Store?

The AutoNation Aftermarket Store is your trusted source for high-quality aftermarket auto parts and accessories. We offer over 275+ leading brands, delivering reliable components for nearly every make and model on the road today.

What types of aftermarket parts do you offer?

Our inventory includes everything from performance upgrades to essential replacement parts such as brakes, filters, suspension components, lighting, and electronics. Whether you're maintaining or upgrading your vehicle, we have you covered.

How do I find the right part for my vehicle?

Use our Search by Vehicle tool to quickly match parts to your exact make, model, and year. This ensures proper fitment and optimal performance.

Are aftermarket parts reliable?

Yes. We carefully curate our catalog with trusted aftermarket brands known for durability and performance. Many aftermarket parts meet or exceed OEM standards while offering better value.

How fast is shipping?

We offer fast and reliable delivery nationwide. Most orders are processed quickly so you can get back on the road without delays.

Do you offer discounts on aftermarket parts?

Yes. Combine essential maintenance items and apply promo code MAINT5SAVE at checkout when your order reaches $75+ to save on your purchase.

Can I install these parts myself?

Many of our products are perfect for DIY enthusiasts, while others may require professional installation. Always review product details and consult a technician if needed.

What if I order the wrong part?

If a part doesn’t fit, you can review our Returns Policy for easy return or exchange options. We recommend verifying compatibility before purchase.

Why shop with AutoNation Aftermarket?

AutoNation is one of America’s most trusted automotive retailers, with 300+ locations nationwide. We combine competitive pricing, quality assurance, and expert selection to deliver unmatched value.

Do aftermarket parts affect vehicle performance?

High-quality aftermarket parts can enhance performance, efficiency, and durability. Choosing the right components ensures your vehicle operates at its best.

Key Product Information

Additional Information

Brand ACDelco Gold
AC Service Tap No
Amperage Rating 157.0
Brushless No
Case Circumference 5.04
128
Case Color Silver
Case Material Aluminum
Country of Origin 10 MY
Country of Origin 11 MX
Country of Origin 12 CN
Country of Origin 13 DE
Country of Origin 14 KR
Country of Origin 15 PL
Country of Origin 16 DK
Country of Origin 6 BR
Country of Origin 7 US
Country of Origin 8 TW
Country of Origin 9 IN
Decoupled Or Clutch Pulley No
Drive End To Pulley 1st Groove Distance 1.1
28
External Fan Included No
External Regulator Included No
FAQ - Answer 1 Yes. These alternators are designed to withstand a wide range of weather conditions.
FAQ - Answer 2 No. Some vehicles require more amperage than others depending on the amount of electronics that need to be operated. Consult the vehicle information for proper application.
FAQ - Question 1 Can I be assured that the unit will last, especially in extreme weather?
FAQ - Question 2 Do all alternators supply the same amperage?
Family Nippondenso
Fan Type Internal
Features & Benefits - Bullet 1 Remanufactured using consistent quality processes; not just rebuilt
Features & Benefits - Bullet 2 Alternators use high-quality bearings with high-temp lubricant and double-lipped rubber seals, reducing friction, vibration, and noise
Features & Benefits - Bullet 3 Rotors and stators are electronically tested and then sealed with secondary insulating coating to help prevent shorts
Features & Benefits - Bullet 4 Performance-tested and inspected to ensure they meet your expectations for quality design and component specifications
Features & Benefits - Bullet 5 Remanufacturing is an industry standard practice that returns parts into service rather than scrapping them
Features & Benefits - Bullet 6 Tested to ensure they perform to ACDelco specifications
Good Maintenance Practices - Section 1 - Bullet 1 There is a cooling fan in most alternators to keep it from overheating. Making sure that the fan is clean will help the fan and alternator run properly.
Good Maintenance Practices - Section 1 - Bullet 2 It is also important that all electrical connections are kept clean and firmly attached, which will make sure the battery is being properly charged by the alternator.
Ground Type Negative
Height (in) 10.25
Length (in) 13.88
Mounting Type Front Mount
One Wire Capable No
Plug Clock Rear View Main Mounting Ear at 6 O Clock 11
Plug Type 337a
Pulley Belt Type Serpentine
Pulley Groove Quantity 8
Pulley Included Yes
Pulley Outside Diameter (in) 2.76
Pulley Outside Diameter (mm) 70
Regulator Type Internal
Rotation Direction Clockwise (Right)
Signs of Wear & Troubleshooting - Section 1 - Bullet 1 Grinding or squeaking noise
Signs of Wear & Troubleshooting - Section 1 - Bullet 2 Alternator warning light illuminates
Signs of Wear & Troubleshooting - Section 2 - Bullet 1 Bad battery
Signs of Wear & Troubleshooting - Section 2 - Bullet 2 Broken, frayed, or loose drive belt
Signs of Wear & Troubleshooting - Section 2 - Bullet 3 Electrical fault
Signs of Wear & Troubleshooting - Section 2 - Bullet 4 Worn or damaged bearings
Signs of Wear & Troubleshooting - Section 2 - Bullet 5 Corroded or loose battery terminal connection
Signs of Wear & Troubleshooting - Section 2 - Bullet 6 Burned fuses or fusible links
Signs of Wear & Troubleshooting - Section 2 - Header Other vehicle parts that might cause related alternator problems include:
Signs of Wear & Troubleshooting - Section 3 - Bullet 1 Battery health
Signs of Wear & Troubleshooting - Section 3 - Bullet 2 Diagnostic trouble codes
Signs of Wear & Troubleshooting - Section 3 - Bullet 3 Evidence of fluid contamination
Signs of Wear & Troubleshooting - Section 3 - Header When making repairs on electrical systems, in-depth diagnosis is needed before parts replacement. This includes checking:
Split Mounting Foot Overall Inner Spacing 2.24
57
Split Mounting Foot Overall Outside Spacing 3.43
87
Terminal Quantity 3
Voltage 12
Weight (lb) 13.3
Width (in) 13.25